23151000 has 64 divisors (see below), whose sum is σ = 72240480. Its totient is φ = 6172800.

The previous prime is 23150999. The next prime is 23151031. The reversal of 23151000 is 15132.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 859 + ... + 6858.

Almost surely, 2^23151000 is an apocalyptic number.

23151000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23151000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36120240).

23151000 is an abundant number, since it is smaller than the sum of its proper divisors (49089480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23151000 is a wasteful number, since it uses less digits than its factorization.

23151000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7741 (or 7727 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 23151000 is about 4811.5486072573. The cubic root of 23151000 is about 285.0076944675.

Adding to 23151000 its reverse (15132), we get a palindrome (23166132).

The spelling of 23151000 in words is "twenty-three million, one hundred fifty-one thousand".